﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using Microsoft.VisualBasic;

namespace Job.Core.Common
{
    /// <summary>
    /// 常规性 String 操作扩展。
    /// </summary>
    public static class StringExtensions
    {
        #region Properties

        private static readonly char[] chs = "杯翱鳖产叠皋钩硅捍后伙秸凌麼宁钎尸抬绦为伪锨蝎勋颜彝灶扎钟众".ToCharArray();

        private static readonly char[] cht = "盃翺鼈産疊臯鈎矽捍後夥稭淩麼甯釺屍擡縧爲僞鍁蠍勳顔彜竈紮鍾衆".ToCharArray();

        private static readonly int[] pinyinCode = new int[]
        {
            -20319,-20317,-20304,-20295,-20292,-20283,-20265,-20257,-20242,-20230,-20051,-20036,
            -20032,-20026,-20002,-19990,-19986,-19982,-19976,-19805,-19784,-19775,-19774,-19763,
            -19756,-19751,-19746,-19741,-19739,-19728,-19725,-19715,-19540,-19531,-19525,-19515,
            -19500,-19484,-19479,-19467,-19289,-19288,-19281,-19275,-19270,-19263,-19261,-19249,
            -19243,-19242,-19238,-19235,-19227,-19224,-19218,-19212,-19038,-19023,-19018,-19006,
            -19003,-18996,-18977,-18961,-18952,-18783,-18774,-18773,-18763,-18756,-18741,-18735,
            -18731,-18722,-18710,-18697,-18696,-18526,-18518,-18501,-18490,-18478,-18463,-18448,
            -18447,-18446,-18239,-18237,-18231,-18220,-18211,-18201,-18184,-18183, -18181,-18012,
            -17997,-17988,-17970,-17964,-17961,-17950,-17947,-17931,-17928,-17922,-17759,-17752,
            -17733,-17730,-17721,-17703,-17701,-17697,-17692,-17683,-17676,-17496,-17487,-17482,
            -17468,-17454,-17433,-17427,-17417,-17202,-17185,-16983,-16970,-16942,-16915,-16733,
            -16708,-16706,-16689,-16664,-16657,-16647,-16474,-16470,-16465,-16459,-16452,-16448,
            -16433,-16429,-16427,-16423,-16419,-16412,-16407,-16403,-16401,-16393,-16220,-16216,
            -16212,-16205,-16202,-16187,-16180,-16171,-16169,-16158,-16155,-15959,-15958,-15944,
            -15933,-15920,-15915,-15903,-15889,-15878,-15707,-15701,-15681,-15667,-15661,-15659,
            -15652,-15640,-15631,-15625,-15454,-15448,-15436,-15435,-15419,-15416,-15408,-15394,
            -15385,-15377,-15375,-15369,-15363,-15362,-15183,-15180,-15165,-15158,-15153,-15150,
            -15149,-15144,-15143,-15141,-15140,-15139,-15128,-15121,-15119,-15117,-15110,-15109,
            -14941,-14937,-14933,-14930,-14929,-14928,-14926,-14922,-14921,-14914,-14908,-14902,
            -14894,-14889,-14882,-14873,-14871,-14857,-14678,-14674,-14670,-14668,-14663,-14654,
            -14645,-14630,-14594,-14429,-14407,-14399,-14384,-14379,-14368,-14355,-14353,-14345,
            -14170,-14159,-14151,-14149,-14145,-14140,-14137,-14135,-14125,-14123,-14122,-14112,
            -14109,-14099,-14097,-14094,-14092,-14090,-14087,-14083,-13917,-13914,-13910,-13907,
            -13906,-13905,-13896,-13894,-13878,-13870,-13859,-13847,-13831,-13658,-13611,-13601,
            -13406,-13404,-13400,-13398,-13395,-13391,-13387,-13383,-13367,-13359,-13356,-13343,
            -13340,-13329,-13326,-13318,-13147,-13138,-13120,-13107,-13096,-13095,-13091,-13076,
            -13068,-13063,-13060,-12888,-12875,-12871,-12860,-12858,-12852,-12849,-12838,-12831,
            -12829,-12812,-12802,-12607,-12597,-12594,-12585,-12556,-12359,-12346,-12320,-12300,
            -12120,-12099,-12089,-12074,-12067,-12058,-12039,-11867,-11861,-11847,-11831,-11798,
            -11781,-11604,-11589,-11536,-11358,-11340,-11339,-11324,-11303,-11097,-11077,-11067,
            -11055,-11052,-11045,-11041,-11038,-11024,-11020,-11019,-11018,-11014,-10838,-10832,
            -10815,-10800,-10790,-10780,-10764,-10587,-10544,-10533,-10519,-10331,-10329,-10328,
            -10322,-10315,-10309,-10307,-10296,-10281,-10274,-10270,-10262,-10260,-10256,-10254
        };

        private static readonly string[] pinyinValue = new string[]
        {
            "A","Ai","An","Ang","Ao","Ba","Bai","Ban","Bang","Bao","Bei","Ben",
            "Beng","Bi","Bian","Biao","Bie","Bin","Bing","Bo","Bu","Ba","Cai","Can",
            "Cang","Cao","Ce","Ceng","Cha","Chai","Chan","Chang","Chao","Che","Chen","Cheng",
            "Chi","Chong","Chou","Chu","Chuai","Chuan","Chuang","Chui","Chun","Chuo","Ci","Cong",
            "Cou","Cu","Cuan","Cui","Cun","Cuo","Da","Dai","Dan","Dang","Dao","De",
            "Deng","Di","Dian","Diao","Die","Ding","Diu","Dong","Dou","Du","Duan","Dui",
            "Dun","Duo","E","En","Er","Fa","Fan","Fang","Fei","Fen","Feng","Fo",
            "Fou","Fu","Ga","Gai","Gan","Gang","Gao","Ge","Gei","Gen","Geng","Gong",
            "Gou","Gu","Gua","Guai","Guan","Guang","Gui","Gun","Guo","Ha","Hai","Han",
            "Hang","Hao","He","Hei","Hen","Heng","Hong","Hou","Hu","Hua","Huai","Huan",
            "Huang","Hui","Hun","Huo","Ji","Jia","Jian","Jiang","Jiao","Jie","Jin","Jing",
            "Jiong","Jiu","Ju","Juan","Jue","Jun","Ka","Kai","Kan","Kang","Kao","Ke",
            "Ken","Keng","Kong","Kou","Ku","Kua","Kuai","Kuan","Kuang","Kui","Kun","Kuo",
            "La","Lai","Lan","Lang","Lao","Le","Lei","Leng","Li","Lia","Lian","Liang",
            "Liao","Lie","Lin","Ling","Liu","Long","Lou","Lu","Lv","Luan","Lue","Lun",
            "Luo","Ma","Mai","Man","Mang","Mao","Me","Mei","Men","Meng","Mi","Mian",
            "Miao","Mie","Min","Ming","Miu","Mo","Mou","Mu","Na","Nai","Nan","Nang",
            "Nao","Ne","Nei","Nen","Neng","Ni","Nian","Niang","Niao","Nie","Nin","Ning",
            "Niu","Nong","Nu","Nv","Nuan","Nue","Nuo","O","Ou","Pa","Pai","Pan",
            "Pang","Pao","Pei","Pen","Peng","Pi","Pian","Piao","Pie","Pin","Ping","Po",
            "Pu","Qi","Qia","Qian","Qiang","Qiao","Qie","Qin","Qing","Qiong","Qiu","Qu",
            "Quan","Que","Qun","Ran","Rang","Rao","Re","Ren","Reng","Ri","Rong","Rou",
            "Ru","Ruan","Rui","Run","Ruo","Sa","Sai","San","Sang","Sao","Se","Sen",
            "Seng","Sha","Shai","Shan","Shang","Shao","She","Shen","Sheng","Shi","Shou","Shu",
            "Shua","Shuai","Shuan","Shuang","Shui","Shun","Shuo","Si","Song","Sou","Su","Suan",
            "Sui","Sun","Suo","Ta","Tai","Tan","Tang","Tao","Te","Teng","Ti","Tian",
            "Tiao","Tie","Ting","Tong","Tou","Tu","Tuan","Tui","Tun","Tuo","Wa","Wai",
            "Wan","Wang","Wei","Wen","Weng","Wo","Wu","Xi","Xia","Xian","Xiang","Xiao",
            "Xie","Xin","Xing","Xiong","Xiu","Xu","Xuan","Xue","Xun","Ya","Yan","Yang",
            "Yao","Ye","Yi","Yin","Ying","Yo","Yong","You","Yu","Yuan","Yue","Yun",
            "Za", "Zai","Zan","Zang","Zao","Ze","Zei","Zen","Zeng","Zha","Zhai","Zhan",
            "Zhang","Zhao","Zhe","Zhen","Zheng","Zhi","Zhong","Zhou","Zhu","Zhua","Zhuai","Zhuan",
            "Zhuang","Zhui","Zhun","Zhuo","Zi","Zong","Zou","Zu","Zuan","Zui","Zun","Zuo"
        };

        #endregion

        #region Convert

        /// <summary>
        /// 将字符串转换为 Int32 类型。
        /// </summary>
        /// <param name="s"></param>
        /// <param name="defaultValue">转换失败时返回的值。</param>
        /// <returns>转换后的 Int32 值，转换失败时返回 defaultValue 值。</returns>
        public static int ToInt32(this string s, int defaultValue)
        {
            int val;
            return (int.TryParse(s, out val)) ? val : defaultValue;
        }

        /// <summary>
        /// 将字符串转换为可空 Int32 类型，转换失败时返回 null。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>转换成功则返回转换后的 Int32 值，否则返回 null。</returns>
        public static int? ToInt32(this string s)
        {
            int val;
            if (int.TryParse(s, out val))
                return val;

            return null;
        }

        /// <summary>
        /// 将字符串转换为 Decimal 类型。
        /// </summary>
        /// <param name="s"></param>
        /// <param name="defaultValue">转换失败时返回的值。</param>
        /// <returns>转换后的 Decimal 值，转换失败时返回 defaultValue 值。</returns>
        public static decimal ToDecimal(this string s, decimal defaultValue)
        {
            decimal val;
            return (decimal.TryParse(s, out val)) ? val : defaultValue;
        }

        /// <summary>
        /// 将字符串转换为可空 Decimal 类型，转换失败时返回 null。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>转换成功则返回转换后的 Decimal 值，否则返回 null。</returns>
        public static decimal? Decimal(this string s)
        {
            decimal val;
            if (decimal.TryParse(s, out val))
                return val;

            return null;
        }

        /// <summary>
        /// 将字符串转换为 Boolean 类型。
        /// </summary>
        /// <param name="s"></param>
        /// <param name="defaultValue">转换失败时返回的值。</param>
        /// <returns>转换后的 Boolean 值，转换失败时返回 defaultValue 值。</returns>
        public static bool ToBoolean(this string s, bool defaultValue)
        {
            bool val;
            return (bool.TryParse(s, out val)) ? val : defaultValue;
        }

        /// <summary>
        /// 将字符串转换为可空 Boolean 类型，转换失败时返回 null。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>转换成功则返回转换后的 Boolean 值，否则返回 null。</returns>
        public static bool? ToBoolean(this string s)
        {
            bool val;
            if (bool.TryParse(s, out val))
                return val;

            return null;
        }

        /// <summary>
        /// 将字符串转换成 DateTime 类型。
        /// </summary>
        /// <param name="s"></param>
        /// <param name="defaultValue">转换失败时返回的值。</param>
        /// <returns>转换成功则返回转换后的 DateTime 值，否则返回 defaultValue 值。</returns>
        public static DateTime ToDateTime(this string s, DateTime defaultValue)
        {
            DateTime val;
            return DateTime.TryParse(s, out val) ? val : defaultValue;
        }

        /// <summary>
        /// 将字符串转换成可空 DateTime 类型，转换失败时返回 null。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>转换后的 DateTime 值，转换失败时返回 null。</returns>
        public static DateTime? ToDateTime(this string s)
        {
            DateTime val;
            if (DateTime.TryParse(s, out val))
                return val;

            return null;
        }

        /// <summary>
        /// 将字符串转换成繁体。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>繁体中文。</returns>
        public static string ToTraditional(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return s;

            StringBuilder sb = new StringBuilder(s, s.Length);

            for (int i = 0, min = Math.Min(chs.Length, cht.Length); i < min; i++)
                sb.Replace(chs[i], cht[i]);

            return Strings.StrConv(sb.ToString(), VbStrConv.TraditionalChinese, 86);
        }

        /// <summary>
        /// 将字符串转换成简体。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>简体中文。</returns>
        public static string ToSimplified(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return s;

            StringBuilder sb = new StringBuilder(s, s.Length);

            for (int i = 0, min = Math.Min(chs.Length, cht.Length); i < min; i++)
                sb.Replace(cht[i], chs[i]);

            return Strings.StrConv(sb.ToString(), VbStrConv.SimplifiedChinese, 86);
        }

        /// <summary>
        /// 将字符串中的汉字转化为拼音(全拼)。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>拼音字串。</returns>
        public static string ToPinyin(this string s)
        {
            // 匹配中文字符
            Regex regex = new Regex("^[\u4e00-\u9fa5]$");
            byte[] array = new byte[2];
            string result = string.Empty;
            int chrAsc = 0;
            int i1 = 0;
            int i2 = 0;
            char[] noWChar = s.ToCharArray();

            for (int i = 0; i < noWChar.Length; i++)
            {
                string wchar = noWChar[i].ToString();

                // 中文字符
                if (regex.IsMatch(wchar))
                {
                    array = System.Text.Encoding.Default.GetBytes(wchar);
                    i1 = (short)(array[0]);
                    i2 = (short)(array[1]);
                    chrAsc = i1 * 256 + i2 - 65536;
                    if (chrAsc > 0 && chrAsc < 160)
                    {
                        result += wchar;
                    }
                    else
                    {
                        // 修正部分文字
                        if (chrAsc == -9254)  // 修正"圳"字
                            result += "Zhen";
                        else
                        {
                            for (int j = (pinyinCode.Length - 1); j >= 0; j--)
                            {
                                if (pinyinCode[j] <= chrAsc)
                                {
                                    result += pinyinValue[j];
                                    break;
                                }
                            }
                        }
                    }
                }
                // 非中文字符
                //else
                //{
                //    result += wchar;
                //}
            }

            return result;
        }

        /// <summary>
        /// 返回字符串中每个汉字拼音的首字母。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>每汉字拼音首字母。</returns>
        public static string ToPinyinInitial(this string s)
        {
            string result = string.Empty;

            char[] arrChar = s.ToCharArray();

            foreach (char c in arrChar)
            {
                string pinyin = ToPinyin(c.ToString());

                if (!string.IsNullOrEmpty(pinyin))
                {
                    pinyin = pinyin.Substring(0, 1);
                    result += pinyin;
                }
            }

            return result;
        }              

        #endregion

        #region Get helper

        /// <summary>
        /// 获取安全的 sql 。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>安全的 sql。</returns>
        public static string GetSafeKeyWord(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return string.Empty;

            return s.Replace("'", "''");
        }
        
        /// <summary>
        /// 获得字符串长度
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static int GetLength(this string str)
        {
            if (string.IsNullOrEmpty(str))
                return 0;
            return str.Length;
        }
        /// <summary>
        /// 首字母转大写
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string ChangeFirstWordToUpper(this string str)
        {
            int len = str.Length;
            string strResult = "";
            if (len > 1)
            {
                string strTemp = str.Substring(0, 1).ToUpper();
                string strTempNew = str.Substring(1, len - 1);
                strResult = strTemp + strTempNew;
            }
            else
                strResult = str;
            return strResult;
        }

        /// <summary>
        /// 截取字符串
        /// </summary>
        /// <param name="strObject">可转为string类型的变量</param>
        /// <param name="strLen">截取字符位数，程序自动判断全半角，全角占2位，半角占1位</param>
        /// <returns>截取后字符串</returns>
        public static string GetSubLen(this string str, int strLen)
        {
            return GetSubLen(str, strLen, false);
        }

        /// <summary>
        /// 截取字符串
        /// </summary>
        /// <param name="strObject">可转为string类型的变量</param>
        /// <param name="strLen">截取字符位数，程序自动判断全半角，全角占2位，半角占1位</param>
        /// <param name="senb">是否显示“...”</param>
        /// <returns>截取后字符串</returns>
        public static string GetSubLen(this string str, int strLen, bool senb)
        {
            if (string.IsNullOrEmpty(str))
                return string.Empty;

            //替换换行符
            str = str.Replace("&#13;", "");

            char[] arrChar = str.ToCharArray();
            string returnStr = str;
            int charCount = 0;

            for (int i = 0; i < arrChar.Length; i++)
            {
                if ((int)arrChar[i] > 255)
                    charCount += 2;
                else
                    charCount++;

                if (charCount >= strLen)
                {
                    returnStr = str.Substring(0, i + 1);
                    if (senb && str.Length > returnStr.Length) returnStr += "...";
                    break;
                }
            }
            return returnStr;
        }
        #endregion

        #region Validation

        /// <summary>
        /// 判断当前是否为一个空字符串。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>为空字符串返回 null，否则返回 false。</returns>
        public static bool IsNull(this string s)
        {
            return string.IsNullOrEmpty(s) || s == null || s.Length == 0;
        }

        /// <summary>
        /// 判断是否为,号分格的Int32集合。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>为,号分格的Int32集合返回 true，否则返回 false。</returns>
        public static bool IsCommaSplitInt32(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;

            s = s.Trim(',');

            string[] split = s.Split(',');
            int val;
            foreach (string tmp in split)
            {
                if (!int.TryParse(tmp, out val))
                    return false;
            }

            return true;
        }

        /// <summary>
        /// 是否为合法的 Email 地址。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>为合法的 Email 地址返回 true，否则返回 false。</returns>
        public static bool IsEmail(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return Regex.IsMatch(s, @"^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$");
            //return CRegex.IsMatch(str, @"^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$");
        }

        /// <summary>
        /// 是否为合法的 Url 地址。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>为合法的 Url 地址返回 true，否则返回 false。</returns>
        public static bool IsUrl(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return Regex.IsMatch(s, @"^http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?$");
            //return Regex.IsMatch(s, @"http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?");
        }

        /// <summary>
        /// 判断是否为中文字串。
        /// 中文【字符、文章、空格、符号】
        /// </summary>
        /// <param name="s"></param>
        /// <returns>是否为中文字串返回 true，否则返回 false。</returns>
        public static bool IsChinese(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return Regex.IsMatch(s, @"^[\u0391-\uFFE5]+$");
        }

        /// <summary>
        /// 单个字符 不能有空格
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsChineseChar(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"[\u4e00-\u9fa5]");
        }


        /// <summary>
        /// 是否为合法的 IP 地址。
        /// </summary>
        /// <param name="s"></param>
        /// <returns>为合法的 IP 地址返回 true，否则返回 false。</returns>
        public static bool IsIP(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return Regex.IsMatch(s, @"(((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))\.){3}((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))");
        }

        /// <summary>
        /// 判断当前字符串是否符合匹配指定的正则。
        /// </summary>
        /// <param name="pattern">要匹配的表达式。</param>
        /// <returns>符合匹配指定的正则返回 true，否则返回 false。</returns>
        public static bool IsPattern(this string s, string pattern)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return Regex.IsMatch(s, pattern, RegexOptions.IgnoreCase);
        }

        /// <summary>
        /// 英文【字符、文章、空格、符号（英文的）】
        /// </summary>
        public static bool IsEnglishStr(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"[a-zA-Z]+$");
        }

        /// <summary>
        /// 单个字符 不能有空格
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsEnglish(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"[a-zA-Z]+$");
        }
        
        /// <summary>
        /// 是否是HTML
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsHtml(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"<[^<]*>");
        }

        /// <summary>
        /// 是否是数字字符串
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsNum(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^[0-9]+$");
        }

        /// <summary>
        /// 是否是数字字符串 123,456
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsNumStr(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^[0-9]+$");
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static bool IsSimpleName(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^[a-zA-Z0-9_]{4,18}$");
        }

        /// <summary>
        /// 是否是正确的密码格式
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsPwd(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^[a-zA-Z0-9\.]{6,18}$");
        }

        /// <summary>
        /// 是否包含空格
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static bool ContainBlank(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"\s+");
        }

        /// <summary>
        /// 是否是图片
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static bool IsImg(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^.*?\.(jpg|jpeg|bmp|gif|png)$");
        }

        /// <summary>
        /// 是否是 货币 格式
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static bool IsMoney(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^((([1-9]\d*)|0)(\.\d{1,2})?)$");
        }

        /// <summary>
        /// 是否是 Guid
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static bool IsGuid(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}");
        }

        /// <summary>
        /// 是否是 时间格式
        /// 2009-10-11
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsDate(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}$");
        }

        /// <summary>
        /// 是否是 时间格式
        /// 2009-10-11 10:20
        /// </summary>
        /// <param name="strDatetime"></param>
        /// <returns></returns>
        public static bool IsDatetime(this string s)
        {
            if (string.IsNullOrEmpty(s))
                return false;
            return CRegex.IsMatch(s, @"^[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}\s[0-9]{1,2}:[0-9]{1,2}$");
        }
        #endregion
    }
}
